Gardiner may refer to:

Places

Settlements

;Canada * Gardiner, Ontario ;United States * Gardiner, Maine * Gardiner, Montana * Gardiner (town), New York ** Gardiner (CDP), New York * Gardiner, Oregon * Gardiner, Washington * West Gardiner, Maine

Buildings and landmarks

*Gardiner Museum, a ceramics museum in Toronto

Geographical features

;Antarctica * Gardiner Ridge, Ames Range, Marie Byrd Land ;Australia * Gardiner railway station, Melbourne, Victoria ;Canada * Gardiner Dam in Saskatchewan * Gardiner Expressway in Toronto * Gardiner Island (Nunavut), uninhabited arctic island in Nunavut ;United States * Gardiners Bay in New York State * Gardiners Island in Gardiners Bay * Gardiner River (also known as the Gardner River) in Yellowstone National Park, United States

People

* Lord Gardiner (disambiguation) * Baron Gardiner

Stagenames

* Gardiner Sisters

People with Gardiner as a surname

:''See Gardiner (surname)''

People with Gardiner as a first name

* Gardiner Greene (1753–1832), American cotton planter and merchant * Gardiner Greene Hubbard (1822–1897), first president of the National Geographic Society

Ships

* , a British frigate in commission in the Royal Navy from 1943 to 1945

Linguistics

* Gardiner's sign list, a standard method for categorizing ancient Egyptian hieroglyphics